Which condition in a nebula would prevent nuclear fusion? a) the presence of nitrogen and carbon b) a decrease in the overall volume of gases c) a core temperature of only ten thousand kelvin d) physical contact between bare nuclei

A decrease in the ovrall gases.

Explanation:

It takes gas to even beable to do so , gases are what makes up most of the earth , itself. The volume of it is what helps the earth , goes from the inner core to the crust by deflaming and letting all of the gases go away.

wavelength variability is the right one

co2reflects heat radiation back to earth buning coal and oil emits co2 globe warms